1. Which command displays a list of currently running processes in Unix-like operating systems?
a) ls
b) procview
c) ps
d) viewproc
Answer: c) ps
Explanation: The ps command in Unix-like operating systems is used to display information about processes running on the system.
2. What are the typical attributes of a process?
a) Process ID, Parent Process ID, CPU usage
b) Process name, Process type, Process priority
c) Process ID, Process name, Process state
d) Process ID, Process group, Process status
Answer: c) Process ID, Process name, Process state
Explanation: Process attributes commonly include Process ID (PID), Process name, and Process state (running, sleeping, etc.).
3. Which command is used to view detailed information about a specific process in Unix-like systems?
a) prinfo
b) pinfo
c) pgrep
d) prstat
Answer: d) prstat
Explanation: The prstat command displays detailed information about processes, including resource usage statistics.
4. What is the primary purpose of the CDE Process Manager in Unix systems?
a) To monitor network connections
b) To manage graphical user interface processes
c) To schedule batch jobs
d) To analyze disk usage
Answer: b) To manage graphical user interface processes
Explanation: The Common Desktop Environment (CDE) Process Manager is used in Unix systems to manage graphical user interface processes.
5. How can you change the priority of a time-sharing process in Unix-like systems?
a) Using the nice command
b) Using the kill command
c) Using the top command
d) Using the chmod command
Answer: a) Using the nice command
Explanation: The nice command is used to change the priority of a process in Unix-like systems, thereby affecting its scheduling.
6. Which command is used to terminate or kill a process in Unix-like systems?
a) halt
b) end
c) kill
d) stop
Answer: c) kill
Explanation: The kill command is used to terminate or send signals to processes in Unix-like systems.
7. What is the significance of process states in process management?
a) They indicate the age of the process
b) They determine the amount of CPU time allocated to a process
c) They represent the current condition or status of a process
d) They indicate the priority level of the process
Answer: c) They represent the current condition or status of a process
Explanation: Process states indicate the current condition or status of a process, such as running, sleeping, or terminated.
8. Which command is used to search for processes based on specific criteria like process name in Unix-like systems?
a) findproc
b) psgrep
c) pgrep
d) procfind
Answer: c) pgrep
Explanation: The pgrep command is used to search for processes based on specific criteria, such as process name, in Unix-like systems.
9. What does the scheduling priority of a process determine in Unix-like systems?
a) The order in which processes are executed
b) The amount of memory allocated to a process
c) The amount of CPU time allocated to a process
d) The process’s file permissions
Answer: a) The order in which processes are executed
Explanation: The scheduling priority of a process determines the order in which processes are executed by the operating system’s scheduler.
10. What information does the ps command display by default in Unix-like systems?
a) All processes running on the system
b) Only the user’s own processes
c) Processes with the highest CPU usage
d) Processes in the ‘sleep’ state
Answer: b) Only the user’s own processes
Explanation: By default, the ps command in Unix-like systems displays only the processes owned by the user who issued the command.